Debt - Maturities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Annual maturities of debt:
2022	$ 111.1
2023	15.8
2024	115.2
2025	15.5
2026	15.2
Thereafter	1,059.1
Total debt	1,331.9
Notional Amount	1,524.8	$ 1,139.9
Decrease in net interest expense	5.5	7.2
Cumulative translational adjustment section of other comprehensive income	36.4	47.1	$ 6.8
Interest expense	14.3	$ 14.4	$ 16.0
U.S. to Swiss Franc cross-currency and interest rate swap agreements
Annual maturities of debt:
Notional Amount	149.6
U.S. to Euro cross-currency and interest rate swap agreements
Annual maturities of debt:
Notional Amount	$ 354.7